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I'm developing an app where the user will choose some area on the map and then obtain list of residential buildings addresses belongs to it. For now I think about this flow: get bounding box coordinates of selected area -> get list of streets (using OSM) of the area -> get list of buildings for each street (using Zillow) -> check is building coordinates belong to selected area.

Maybe there is any downloadable DB of all residential buildings of USA or one-solution API where I could get all buildings by single request?

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Why not use OSM Buildings data?
Microsoft released US Building Footprints dataset but you are going to want to ensure accuracy. I've read/seen examples where it is not 100% accurate.

OSM Buildings References:

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  • thank you @albert. do you mean osmbuildings.org/documentation ?
    – CodeBy
    Jul 31, 2018 at 17:52
  • that is osm buildings, but if i am not mistaken, doesn't osm offer buildings data in general?
    – albert
    Jul 31, 2018 at 18:55
  • I don't know, but even OSM website don't show any buildings gyazo.com/bc0ce01b10e7eb0ac2f7efec607ba2c3 also I need determine it is private (signle-family building) or not
    – CodeBy
    Jul 31, 2018 at 19:52
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    how to get OSM buildings data? when I user OSM API, it returns only nodes and ways (streets)?
    – CodeBy
    Aug 1, 2018 at 12:02
  • OSM is a project based on volunteers. Building data hasn't been added yet for every location. Feel free to join OSM and improve it yourself.
    – scai
    Dec 20, 2019 at 9:46

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